The series includes the Core i5-4690K, and the Core i7-4790K. The i5-4690K is clocked at 3.50 GHz, with Turbo Boost frequencies of 3.90 GHz, and features 6 MB of L3 cache. The i7-4790K, on the other hand, is the first Intel Core processor to ship with out of the box clock speed of 4.00 GHz, and Turbo Boost speeds of 4.40 GHz. It features 8 MB of L3 cache, and HyperThreading, which enables eight logical CPUs for the OS to deal with. The i5-4690K is priced at US $250, and the i7-4790K at $350.